Home / 7,719.44-11,578.41-2,172.69

Finding the Fourth Proportional to 7,719.44, 11,578.41 and 2,172.69

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Solution

The fourth proportional to 7,719.44, 11,578.41 and 2,172.69 is: 3,258.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.44 : 11,578.41 = 2,172.69 : x
  2. Step 2: Convert to fraction form
    7,719.44/11,578.41 = 2,172.69/x
  3. Step 3: Cross multiply
    7,719.44x = 11,578.41 × 2,172.69
  4. Step 4: Simplify right side
    7,719.44x = 25,156,295.62
  5. Step 5: Solve for x
    x = 25,156,295.62/7,719.44
  6. Step 6: Final answer
    x = 3,258.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.